CVE-2019-9815
CVSS V2 Medium 6.8
CVSS V3 High 8.1
Description
If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has shipped macOS 10.14.5 with an option to disable hyperthreading in applications running untrusted code in a thread through a new sysctl. Firefox now makes use of it on the main thread and any worker threads. *Note: users need to update to macOS 10.14.5 in order to take advantage of this change.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
Overview
- CVE ID
- CVE-2019-9815
- Assigner
- security@mozilla.org
- Vulnerability Status
- Analyzed
- Published Version
- 2019-07-23T14:15:17
- Last Modified Date
- 2021-09-08T17:22:01
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | 1 | OR | 67.0 | |
| cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* | 1 | OR | 60.7 | |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | 1 | OR | 60.7 | |
| cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1546544 | Permissions Required Third Party Advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-15/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-14/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-13/ | Vendor Advisory |
| https://mdsattacks.com/ | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-9815 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9815 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:07:06 | Added to TrackCVE | |||
| 2022-12-03 23:40:05 | 2019-07-23T14:15Z | 2019-07-23T14:15:17 | CVE Published Date | updated |
| 2022-12-03 23:40:05 | 2021-09-08T17:22:01 | CVE Modified Date | updated | |
| 2022-12-03 23:40:05 | Analyzed | Vulnerability Status | updated |